function getCookie(c_name)
{
  if (document.cookie.length>0)
  {
    c_start=document.cookie.indexOf(c_name + "=");
    if (c_start!=-1)
    { 
      c_start=c_start + c_name.length+1 ;
      c_end=document.cookie.indexOf(";",c_start);
      if (c_end==-1) 
        c_end=document.cookie.length;
      return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
  return "";
}

function setCookie(c_name,value,expiredays)
{
  var exdate = new Date();
  exdate.setDate(exdate.getDate()+expiredays);
  document.cookie = c_name+ "=" +escape(value)+((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function removeCookie(c_name)
{
  setCookie(c_name,"",7);
}
